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          LV04-天猫蓝牙Mesh项目-02-进阶开发-05-蓝牙Mesh配网流程
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<details class="folding-tag" blue><summary> 点击查看使用工具及版本 </summary>
              <div class='content'>
              <table>    <tr>        <td align="center" width=150px>Windows版本</td>        <td align="left">windows11</td>    </tr>    <tr>        <td align="center">Ubuntu版本</td>        <td align="left">Ubuntu22.04的64位版本</td>      </tr>    <tr>        <td align="center">VMware® Workstation 16 Pro</td>        <td align="left">16.2.3 build-19376536</td>      </tr>    <tr>        <td align="center">终端软件</td>        <td align="left">MobaXterm(Professional Edition v23.0 Build 5042 (license))</td>      </tr></table>
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<details class="folding-tag" blue><summary> 点击查看本文参考资料 </summary>
              <div class='content'>
              <table>    <tr>        <td align="center">分类</td>        <td align="center">网址</td>        <td align="center">说明</td>    </tr>    <tr>        <td align="center" rowspan="6">官方网站</td>        <td align="left"><a href="https://cn.aliyun.com/" target="_blank">阿里云</a></td>        <td align="left">阿里云官网主页</td>    </tr>    <tr>        <td align="left"><a href="https://www.aliyun.com/product/iot/livinglink?spm=5176.28508143.J_4VYgf18xNlTAyFFbOuOQe.317.5421154acZniIL&scm=20140722.X_data-1da961ea118f5bb0e4b2._.V_1" target="_blank">阿里生活物联平台</a></td>        <td align="left">生活物联网平台(飞燕平台)主页</td>    </tr>    <tr>        <td align="left"><a href="https://iap.aligenie.com/?spm=0.7629140.0.0.2c611780Ty6tzg" target="_blank">AliGenie</a></td>        <td align="left">天猫精灵开放平台AliGenie主页</td>    </tr>    <tr>        <td align="left"><a href="https://www.aliyun.com/product/iot/iot_instc_public_cn?spm=5176.28508143.J_4VYgf18xNlTAyFFbOuOQe.81.5421154au3ocqp&scm=20140722.X_data-9349178ba84cf028806a._.V_1" target="_blank">阿里物联网平台</a></td>        <td align="left">阿里物联网平台主页</td>    </tr>    <tr>        <td align="left"><a href="https://www.bluetooth.com/zh-cn/" target="_blank">Bluetooth 技术网站</a></td>        <td align="left">蓝牙协议规范什么的可以来这里找</td>    </tr>    <tr>        <td align="left"><a href="https://www.telink-semi.com/" target="_blank">Telink</a></td>        <td align="left">Telink | Chips for a Smarter IoT (telink-semi.com)<br><a href="https://www.telink-semi.cn/" target="_blank">Telink中文官网</a></td>    </tr>    <tr>        <td align="center" rowspan="5">开发手册</td>        <td align="left"><a href="https://help.aliyun.com/zh/alios-things/" target="_blank">AliOS Things开发指南</a></td>        <td align="left">AliOS Things开发指南，这里是最新版本，可以直接从官网找到</td>    </tr>     <tr>        <td align="left"><a href="https://haas.iot.aliyun.com/aliosthings/index.html" target="_blank">AliOS Things开发指南</a></td>        <td align="left">AliOS Things应用开发指南，这里应该是3.3版本的完整开发文档</td>    </tr>    <tr>        <td align="left"><a href="https://gaic.alicdn.com/aic/h5_daily/test/aliosthings/3.0.13/index.html" target="_blank">AliOS Things开发指南(3.0)</a></td>        <td align="left">AliOS Things应用开发指南，这里应该是3.0版本的完整开发文档</td>    </tr>    <tr>        <td align="left"><a href="https://help.aliyun.com/product/123207.html?spm=a2c4g.11186623.6.540.114e60d84sF58G" target="_blank">生活物联网平台开发文档</a></td>        <td align="left">生活物联网平台（飞燕平台）开发文档<br><a href="https://help.aliyun.com/document_detail/180778.html?spm=a2c4g.123207.0.0.49556adcO5apvd" target="_blank">《设备端开发指南》</a></td>    </tr>    <tr>        <td align="left"><a href="https://doc-bot.tmall.com/docs/doc.htm?spm=0.7629140.0.0.7bf81780UN7WkQ&treeId=578&articleId=118057&docType=1" target="_blank">Wi-Fi IoT品类定义与功能开发</a></td>        <td align="left">天猫精灵IoT开放平台——Wi-Fi IoT品类定义与功能开发</td>    </tr>    <tr>        <td align="center" rowspan="3">硬件平台</td>        <td align="left"><a href="https://developer.aliyun.com/article/761644?spm=a2c6h.12873581.0.dArticle761644.1c1b589dRHgvcR&groupCode=genieaiot" target="_blank">mk3080 WiFi开发板</a></td>        <td align="left">WiFi开发板使用指南-阿里云开发者社区</td>    </tr>    <tr>        <td align="left"><a href="http://www.taichi-maker.com/homepage/esp8266-nodemcu-iot/esp8266-nodemcu-tutorial-index/" target="_blank">esp8266开发板</a></td>        <td align="left">一个教程：ESP8266-NodeMCU开发板详解-太极创客 (taichi-maker.com)</td>    </tr>    <tr>        <td align="left"><a href="https://wiki.telink-semi.cn/doc/ds/DS_TLSR8258-E_Datasheet%20for%20Telink%20BLE+IEEE802.15.4%20Multi-Standard%20Wireless%20SoC%20TLSR8258.pdf" target="_blank">TLSR8258 Datasheet</a></td>        <td align="left">Datasheet for Telink BLE + IEEE802.15.4 MultiStandard Wireless SoC TLSR8258</td>    </tr>    <tr>        <td align="center" rowspan="2">参考资料</td>        <td align="left"><a href="https://developer.aliyun.com/article/720516#" target="_blank">AliOS Things 3.0 应用开发指南</a></td>        <td align="left">这个只是一篇参考文章，里面是一些环境搭建相关的，可以参考</td>    </tr>    <tr>        <td align="left"><a href="https://info.support.huawei.com/info-finder/encyclopedia/zh/index.html" target="_blank">IP知识百科 - 华为 (huawei.com)</a></td>        <td align="left">IP的一些相关知识点</td>    </tr></table>
              </div>
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<details class="folding-tag" blue><summary> 点击查看相关文件下载 </summary>
              <div class='content'>
              <table>    <tr>        <td align="center" width=150px>分类</td>        <td align="center">网址</td>        <td align="center">说明</td>    </tr>    <tr>        <td align="left" rowspan="6">蓝牙规范相关文档</td>        <td align="left"><a href="https://www.bluetooth.com/zh-cn/specifications/specs/core-specification-5-2/" target="_blank">Core Specification 5.2</a></td>        <td align="left">核心规格 5.2，该规范定义了创建可互操作的Bluetooth 设备所需的技术。                        <br><a href="./蓝牙参考资料/Core_v5.2.pdf" target="_blank">《Core_v5.2.pdf》</a></td>      </tr>    <tr>        <td align="left"><a href="https://www.bluetooth.com/zh-cn/specifications/specs/mesh-model-1-1/" target="_blank">Mesh Model(v1.1)</a></td>        <td align="left">本Bluetooth 规范定义了模型（以及它们所需的状态和消息），这些模型用于在mesh 网络中的节点上执行基本功能，超出了Bluetooth Mesh 配置文件 规范中定义的基础模型。                        <br>本规范包括定义跨设备类型标准功能的通用模型，以及支持关键mesh 场景的模型，如照明控制、传感器、时间和场景。                        <br><a href="./蓝牙参考资料/MshMDL_v1.1.pdf" target="_blank">《MshMDL_v1.1.pdf》</a></td>      </tr>    <tr>        <td align="left"><a href="https://www.bluetooth.com/zh-cn/specifications/specs/mesh-profile-1-0-1/" target="_blank">Mesh Profile(v1.0.1)</a></td>        <td align="left">该Bluetooth 规范定义了基本要求，以实现可互操作的mesh 网络解决方案，用于Bluetooth 低能量无线技术。                        <br><a href="./蓝牙参考资料/MshPRFv1.0.1.pdf" target="_blank">《MshPRFv1.0.1.pdf》</a></td>      </tr>    <tr>        <td align="left"><a href="https://www.bluetooth.com/zh-cn/specifications/device-properties/" target="_blank">Mesh Device Properties</a></td>        <td align="left">本规范包含Bluetooth Mesh 配置文件 和Bluetooth Mesh 模型规范所要求的设备属性的定义。                        <br>但是跟之前的有些区别，我主要看的之前的版本：<a href="./蓝牙参考资料/MeshDeviceProperties_v1.2.pdf" target="_blank">《MMeshDeviceProperties_v1.2.pdf》</a></td>      </tr>    <tr>        <td align="left"><a href="https://www.bluetooth.com/specifications/gss/" target="_blank">GATT Specification Supplement</a></td>        <td align="left">GATT Specification Supplement | Bluetooth® Technology Website。                        <br>好像可以在线看：<a href="https://btprodspecificationrefs.blob.core.windows.net/gatt-specification-supplement/GATT_Specification_Supplement.pdf" target="_blank">《GATT Specification Supplement》</a></td>      </tr>     <tr>        <td align="left"><a href="https://www.bluetooth.com/specifications/assigned-numbers/" target="_blank">Assigned Numbers</a></td>        <td align="left">GATT的一些类型定义可以在这里找。</td>      </tr>    <tr>        <td align="left" rowspan="2">AliOS Things</td>        <td align="left"><a href="https://gitee.com/alios-things-admin/AliOS-Things" target="_blank">alios-things/AliOS-Things</a></td>        <td align="left">Gitee上的AliOSThings SDK源码仓库</td>      </tr>    <tr>        <td align="left"><a href="https://github.com/alibaba/AliOS-Things" target="_blank">alibaba/AliOS-Things</a></td>        <td align="left">GitHub上的AliOSThings SDK源码仓库</td>      </tr>    <tr>        <td align="left" rowspan="2">天猫精灵蓝牙Mesh协议栈</td>        <td align="left"><a href="https://github.com/alibaba-archive/genie-bt-mesh-stack" target="_blank">alibaba-archive/genie-bt-mesh-stack</a></td>        <td align="left">GitHub上的天猫精灵蓝牙Mesh协议栈源码仓库。<br>之前是在<a href="https://github.com/alibaba/genie-bt-mesh-stack"target="_blank">alibaba/genie-bt-mesh-stack</a>这个仓库。<br>写笔记的时候最新提交为<a href="https://github.com/alibaba-archive/genie-bt-mesh-stack/tree/faf523618a6a2560090fc423222b9db80984bb7a" target="_blank">faf523618a6a2560090fc423222b9db80984bb7a</a></td>      </tr>    <tr>        <td align="left"><a href="https://help.aliyun.com/document_detail/171552.html?spm=a2c4g.173310.0.0.55d6e992e8xJip" target="_blank">蓝牙Mesh设备开发指南</a></td>        <td align="left">阿里云生活服务平台开发手册——蓝牙设备开发一节中的内容</td>      </tr></table>
              </div>
            </details>

<p>这一LV的笔记起始跟前面有所重叠，互相补充吧算是。</p>
<h1 id="一、配网交互流程"><a href="#一、配网交互流程" class="headerlink" title="一、配网交互流程"></a><font size=3>一、配网交互流程</font></h1><img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV21-%E5%A4%A9%E7%8C%AB%E7%B2%BE%E7%81%B5IOT/LV04-%E5%A4%A9%E7%8C%AB%E8%93%9D%E7%89%99Mesh%E9%A1%B9%E7%9B%AE-02-%E8%BF%9B%E9%98%B6%E5%BC%80%E5%8F%91-05-%E8%93%9D%E7%89%99Mesh%E9%85%8D%E7%BD%91%E6%B5%81%E7%A8%8B/img/配网流程.png" alt="配网流程"  />

<h1 id="二、配网过程详解"><a href="#二、配网过程详解" class="headerlink" title="二、配网过程详解"></a><font size=3>二、配网过程详解</font></h1><h2 id="1-信标阶段"><a href="#1-信标阶段" class="headerlink" title="1. 信标阶段"></a><font size=3>1. 信标阶段</font></h2><img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV21-%E5%A4%A9%E7%8C%AB%E7%B2%BE%E7%81%B5IOT/LV04-%E5%A4%A9%E7%8C%AB%E8%93%9D%E7%89%99Mesh%E9%A1%B9%E7%9B%AE-02-%E8%BF%9B%E9%98%B6%E5%BC%80%E5%8F%91-05-%E8%93%9D%E7%89%99Mesh%E9%85%8D%E7%BD%91%E6%B5%81%E7%A8%8B/img/蓝牙Mesh配网流程-信标阶段.png" alt="蓝牙Mesh配网流程-信标阶段" style="zoom: 15%;" />

<h2 id="2-邀请阶段"><a href="#2-邀请阶段" class="headerlink" title="2. 邀请阶段"></a><font size=3>2. 邀请阶段</font></h2><img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV21-%E5%A4%A9%E7%8C%AB%E7%B2%BE%E7%81%B5IOT/LV04-%E5%A4%A9%E7%8C%AB%E8%93%9D%E7%89%99Mesh%E9%A1%B9%E7%9B%AE-02-%E8%BF%9B%E9%98%B6%E5%BC%80%E5%8F%91-05-%E8%93%9D%E7%89%99Mesh%E9%85%8D%E7%BD%91%E6%B5%81%E7%A8%8B/img/蓝牙Mesh配网流程-邀请阶段.png" alt="蓝牙Mesh配网流程-邀请阶段" style="zoom:18%;" />

<h2 id="3-交换公钥阶段"><a href="#3-交换公钥阶段" class="headerlink" title="3. 交换公钥阶段"></a><font size=3>3. 交换公钥阶段</font></h2><img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV21-%E5%A4%A9%E7%8C%AB%E7%B2%BE%E7%81%B5IOT/LV04-%E5%A4%A9%E7%8C%AB%E8%93%9D%E7%89%99Mesh%E9%A1%B9%E7%9B%AE-02-%E8%BF%9B%E9%98%B6%E5%BC%80%E5%8F%91-05-%E8%93%9D%E7%89%99Mesh%E9%85%8D%E7%BD%91%E6%B5%81%E7%A8%8B/img/蓝牙Mesh配网-交换公钥阶段.png" alt="蓝牙Mesh配网-交换公钥阶段" style="zoom:17%;" />

<h2 id="4-身份认证阶段"><a href="#4-身份认证阶段" class="headerlink" title="4. 身份认证阶段"></a><font size=3>4. 身份认证阶段</font></h2><p>进行身份认证交互前，会进行OOB的一个验证，OOB有四种：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV21-%E5%A4%A9%E7%8C%AB%E7%B2%BE%E7%81%B5IOT/LV04-%E5%A4%A9%E7%8C%AB%E8%93%9D%E7%89%99Mesh%E9%A1%B9%E7%9B%AE-02-%E8%BF%9B%E9%98%B6%E5%BC%80%E5%8F%91-05-%E8%93%9D%E7%89%99Mesh%E9%85%8D%E7%BD%91%E6%B5%81%E7%A8%8B/img/image-20240103224729458.png" alt="image-20240103224729458" />

<p>当OOB验证完成后，就进入身份认证的交互流程：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV21-%E5%A4%A9%E7%8C%AB%E7%B2%BE%E7%81%B5IOT/LV04-%E5%A4%A9%E7%8C%AB%E8%93%9D%E7%89%99Mesh%E9%A1%B9%E7%9B%AE-02-%E8%BF%9B%E9%98%B6%E5%BC%80%E5%8F%91-05-%E8%93%9D%E7%89%99Mesh%E9%85%8D%E7%BD%91%E6%B5%81%E7%A8%8B/img/蓝牙Mesh配网-身份认证-交互流程.png" alt="蓝牙Mesh配网-身份认证-交互流程" style="zoom:17%;" />

<p>首先，配网器和未配网设备都会有一个共享密钥和OOB信息，也有可能没有OOB，若是有的话，这个OOB信息会和共享密钥在一起做一次运算，然后共同去加密一些内容，这个内容就是确认值。确认值怎么来的？我们现在有OOB和共享密钥，然后我们再生成一个随机值，这样我们就有了随机值+OOB+共享密钥，然后通过加密算法就得到了确认值。配网器和未配网设备都会有这样一个确认值，我们的配网器会先将确认值发给未配网设备，未配网设备也会将自己的确认值发送给配网器，由于大家的共享密钥和OOB是一样的，那么就可以进行一个反推，这样配网器就可以获取未配网设备生成的随机值，未配网设备就会获得配网器生成的随机值，然后他们互相发给对方进行，确认对方计算的随机值是否与自己生成的随机值一致，若一致，就进入分发配网数据阶段。</p>
<p>这个时候，我们想一下，若是我们没有OOB，那这个时候共享密钥和确认值要是被捕获和监听了，那么它就可以替代原来未配网的设备进行一个身份认证了，这不就很危险？相反，要是有了这个OOB，这个OOB是只有配网器和未配网设备知道的，它并不会被捕获，所以也就无法推算出配网器或者未配网设备生成的随机值。</p>
<h2 id="5-分发数据阶段"><a href="#5-分发数据阶段" class="headerlink" title="5. 分发数据阶段"></a><font size=3>5. 分发数据阶段</font></h2><img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV21-%E5%A4%A9%E7%8C%AB%E7%B2%BE%E7%81%B5IOT/LV04-%E5%A4%A9%E7%8C%AB%E8%93%9D%E7%89%99Mesh%E9%A1%B9%E7%9B%AE-02-%E8%BF%9B%E9%98%B6%E5%BC%80%E5%8F%91-05-%E8%93%9D%E7%89%99Mesh%E9%85%8D%E7%BD%91%E6%B5%81%E7%A8%8B/img/蓝牙Mesh配网-分发配网数据.png" alt="蓝牙Mesh配网-分发配网数据" style="zoom:18%;" />

<p>配网器和未配网设备会再计算出一个会话密钥，这个会话密钥是一次性的。配网分发数据的内容说明如下：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV21-%E5%A4%A9%E7%8C%AB%E7%B2%BE%E7%81%B5IOT/LV04-%E5%A4%A9%E7%8C%AB%E8%93%9D%E7%89%99Mesh%E9%A1%B9%E7%9B%AE-02-%E8%BF%9B%E9%98%B6%E5%BC%80%E5%8F%91-05-%E8%93%9D%E7%89%99Mesh%E9%85%8D%E7%BD%91%E6%B5%81%E7%A8%8B/img/配网分数数据内容.png" alt="配网分数数据内容" style="zoom:18%;" />

<h1 id="三、配网过程代码分析"><a href="#三、配网过程代码分析" class="headerlink" title="三、配网过程代码分析"></a><font size=3>三、配网过程代码分析</font></h1><h2 id="1-蓝牙Mesh的代码在哪？"><a href="#1-蓝牙Mesh的代码在哪？" class="headerlink" title="1. 蓝牙Mesh的代码在哪？"></a><font size=3>1. 蓝牙Mesh的代码在哪？</font></h2><p>我们看一下这个目录：network&#x2F;bluetooth&#x2F;bt_mesh：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV21-%E5%A4%A9%E7%8C%AB%E7%B2%BE%E7%81%B5IOT/LV04-%E5%A4%A9%E7%8C%AB%E8%93%9D%E7%89%99Mesh%E9%A1%B9%E7%9B%AE-02-%E8%BF%9B%E9%98%B6%E5%BC%80%E5%8F%91-05-%E8%93%9D%E7%89%99Mesh%E9%85%8D%E7%BD%91%E6%B5%81%E7%A8%8B/img/image-20240104073558413.png" alt="image-20240104073558413" style="zoom:50%;" />

<p>这里面就是蓝牙Mesh相关的代码实现，我们看一下里面的src目录，有以下文件：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV21-%E5%A4%A9%E7%8C%AB%E7%B2%BE%E7%81%B5IOT/LV04-%E5%A4%A9%E7%8C%AB%E8%93%9D%E7%89%99Mesh%E9%A1%B9%E7%9B%AE-02-%E8%BF%9B%E9%98%B6%E5%BC%80%E5%8F%91-05-%E8%93%9D%E7%89%99Mesh%E9%85%8D%E7%BD%91%E6%B5%81%E7%A8%8B/img/image-20240104073651738.png" alt="image-20240104073651738" style="zoom:50%;" />

<p>其中adv.c文件就是广播包相关的函数实现的源文件。</p>
<h2 id="2-三种广播包的处理"><a href="#2-三种广播包的处理" class="headerlink" title="2. 三种广播包的处理"></a><font size=3>2. 三种广播包的处理</font></h2><p>三种广播包在这里进行处理：network&#x2F;bluetooth&#x2F;bt_mesh&#x2F;src&#x2F;adv.c中的bt_mesh_scan_cb()：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV21-%E5%A4%A9%E7%8C%AB%E7%B2%BE%E7%81%B5IOT/LV04-%E5%A4%A9%E7%8C%AB%E8%93%9D%E7%89%99Mesh%E9%A1%B9%E7%9B%AE-02-%E8%BF%9B%E9%98%B6%E5%BC%80%E5%8F%91-05-%E8%93%9D%E7%89%99Mesh%E9%85%8D%E7%BD%91%E6%B5%81%E7%A8%8B/img/image-20240104074339159.png" alt="image-20240104074339159" />

<p>我们找到network&#x2F;bluetooth&#x2F;bt_mesh&#x2F;src&#x2F;prov.c中的这个bt_mesh_pb_adv_recv()函数，这个函数就是接收到PB-ADV广播包的时候的处理函数，只有在配网的时候会使用此广播包，我们会发现，配网相关的代码都在这个prov.c文件中，我们就主要来看一下这个文件。</p>
<h2 id="3-配网过程分析"><a href="#3-配网过程分析" class="headerlink" title="3. 配网过程分析"></a><font size=3>3. 配网过程分析</font></h2><h3 id="3-1-配网流程回调函数定义"><a href="#3-1-配网流程回调函数定义" class="headerlink" title="3.1 配网流程回调函数定义"></a><font size=3>3.1 配网流程回调函数定义</font></h3><p>我们看一下这部分代码：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV21-%E5%A4%A9%E7%8C%AB%E7%B2%BE%E7%81%B5IOT/LV04-%E5%A4%A9%E7%8C%AB%E8%93%9D%E7%89%99Mesh%E9%A1%B9%E7%9B%AE-02-%E8%BF%9B%E9%98%B6%E5%BC%80%E5%8F%91-05-%E8%93%9D%E7%89%99Mesh%E9%85%8D%E7%BD%91%E6%B5%81%E7%A8%8B/img/image-20240104075145370.png" alt="image-20240104075145370" />

<figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line"><span class="type">static</span> <span class="type">const</span> <span class="class"><span class="keyword">struct</span> &#123;</span></span><br><span class="line">    <span class="type">void</span> (*func)(<span class="type">const</span> <span class="type">u8_t</span> *data);</span><br><span class="line">    <span class="type">u16_t</span> len;</span><br><span class="line">&#125; prov_handlers[] = &#123;</span><br><span class="line">    &#123; prov_invite, <span class="number">1</span> &#125;,			 <span class="comment">// 邀请阶段</span></span><br><span class="line">    &#123; prov_capabilities, <span class="number">11</span> &#125;,	 <span class="comment">// 配网能力</span></span><br><span class="line">    &#123; prov_start, <span class="number">5</span>, &#125;,			 <span class="comment">// 开始配网</span></span><br><span class="line">    &#123; prov_pub_key, <span class="number">64</span> &#125;,		 <span class="comment">// 公钥交换</span></span><br><span class="line">    &#123; prov_input_complete, <span class="number">0</span> &#125;,	 <span class="comment">// 输入OOB完成</span></span><br><span class="line">    &#123; prov_confirm, <span class="number">16</span> &#125;,		 <span class="comment">// 配网认证</span></span><br><span class="line">    &#123; prov_random, <span class="number">16</span> &#125;,		 <span class="comment">// 配网随机值</span></span><br><span class="line">    &#123; prov_data, <span class="number">33</span> &#125;,			 <span class="comment">// 分发数据</span></span><br><span class="line">    &#123; prov_complete, <span class="number">0</span> &#125;,		 <span class="comment">// 分发数据完成</span></span><br><span class="line">    &#123; prov_failed, <span class="number">1</span> &#125;,			 <span class="comment">// 配网失败</span></span><br><span class="line">&#125;;</span><br></pre></td></tr></table></figure>

<h3 id="3-2-bt-mesh-pb-adv-recv"><a href="#3-2-bt-mesh-pb-adv-recv" class="headerlink" title="3.2 bt_mesh_pb_adv_recv()"></a><font size=3>3.2 bt_mesh_pb_adv_recv()</font></h3><img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV21-%E5%A4%A9%E7%8C%AB%E7%B2%BE%E7%81%B5IOT/LV04-%E5%A4%A9%E7%8C%AB%E8%93%9D%E7%89%99Mesh%E9%A1%B9%E7%9B%AE-02-%E8%BF%9B%E9%98%B6%E5%BC%80%E5%8F%91-05-%E8%93%9D%E7%89%99Mesh%E9%85%8D%E7%BD%91%E6%B5%81%E7%A8%8B/img/image-20240104075837526.png" alt="image-20240104075837526" />

<h3 id="3-3-gen-prov-recv"><a href="#3-3-gen-prov-recv" class="headerlink" title="3.3 gen_prov_recv()"></a><font size=3>3.3 gen_prov_recv()</font></h3><p>上面判断完Link ID，就会进图下面这个gen_prov_recv()函数：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV21-%E5%A4%A9%E7%8C%AB%E7%B2%BE%E7%81%B5IOT/LV04-%E5%A4%A9%E7%8C%AB%E8%93%9D%E7%89%99Mesh%E9%A1%B9%E7%9B%AE-02-%E8%BF%9B%E9%98%B6%E5%BC%80%E5%8F%91-05-%E8%93%9D%E7%89%99Mesh%E9%85%8D%E7%BD%91%E6%B5%81%E7%A8%8B/img/image-20240104231659737.png" alt="image-20240104231659737" />

<h3 id="3-4-gen-prov-ctl"><a href="#3-4-gen-prov-ctl" class="headerlink" title="3.4 gen_prov_ctl()"></a><font size=3>3.4 gen_prov_ctl()</font></h3><p>我们先来看一下这个配网承载控制的函数，因为配网开始的时候我们肯定是要先获取未配网设备的UUID（配网过程信标阶段那个图中有），所以最开始我们收到的应该是配网承载控制这样的一个包，我们点开看一下：</p>
<img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV21-%E5%A4%A9%E7%8C%AB%E7%B2%BE%E7%81%B5IOT/LV04-%E5%A4%A9%E7%8C%AB%E8%93%9D%E7%89%99Mesh%E9%A1%B9%E7%9B%AE-02-%E8%BF%9B%E9%98%B6%E5%BC%80%E5%8F%91-05-%E8%93%9D%E7%89%99Mesh%E9%85%8D%E7%BD%91%E6%B5%81%E7%A8%8B/img/image-20240104232150723.png" alt="image-20240104232150723" />

<p>link_open()函数执行完毕的时候，就说明这个时候我们的信标阶段就结束了。</p>
<h3 id="3-5-gen-prov-start"><a href="#3-5-gen-prov-start" class="headerlink" title="3.5 gen_prov_start()"></a><font size=3>3.5 gen_prov_start()</font></h3><img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV21-%E5%A4%A9%E7%8C%AB%E7%B2%BE%E7%81%B5IOT/LV04-%E5%A4%A9%E7%8C%AB%E8%93%9D%E7%89%99Mesh%E9%A1%B9%E7%9B%AE-02-%E8%BF%9B%E9%98%B6%E5%BC%80%E5%8F%91-05-%E8%93%9D%E7%89%99Mesh%E9%85%8D%E7%BD%91%E6%B5%81%E7%A8%8B/img/image-20240104233318657.png" alt="image-20240104233318657" />

<p>这个函数就要开始配网了，这里我们算一下就可以知道，这里是不能有分包的，只有不分包的情况下，才会进入这个函数。</p>
<h3 id="3-6-prov-msg-recv"><a href="#3-6-prov-msg-recv" class="headerlink" title="3.6 prov_msg_recv()"></a><font size=3>3.6 prov_msg_recv()</font></h3><img data-src="https://fanhua-picture.oss-cn-hangzhou.aliyuncs.com/01%E5%B5%8C%E5%85%A5%E5%BC%8F%E5%BC%80%E5%8F%91/01HQ%E8%AF%BE%E7%A8%8B%E4%BD%93%E7%B3%BB/LV21-%E5%A4%A9%E7%8C%AB%E7%B2%BE%E7%81%B5IOT/LV04-%E5%A4%A9%E7%8C%AB%E8%93%9D%E7%89%99Mesh%E9%A1%B9%E7%9B%AE-02-%E8%BF%9B%E9%98%B6%E5%BC%80%E5%8F%91-05-%E8%93%9D%E7%89%99Mesh%E9%85%8D%E7%BD%91%E6%B5%81%E7%A8%8B/img/image-20240104233934464.png" alt="image-20240104233934464" />

<p>在这个函数中具体去执行矫情、交换公钥、身份认证这些阶段，一直到配网完成，流程都在这里面。</p>
<h2 id="4-PB-ADV包分析代码"><a href="#4-PB-ADV包分析代码" class="headerlink" title="4. PB-ADV包分析代码"></a><font size=3>4. PB-ADV包分析代码</font></h2><figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span 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class="line">331</span><br><span class="line">332</span><br><span class="line">333</span><br><span class="line">334</span><br><span class="line">335</span><br><span class="line">336</span><br><span class="line">337</span><br><span class="line">338</span><br><span class="line">339</span><br><span class="line">340</span><br><span class="line">341</span><br><span class="line">342</span><br><span class="line">343</span><br><span class="line">344</span><br><span class="line">345</span><br><span class="line">346</span><br><span class="line">347</span><br><span class="line">348</span><br><span class="line">349</span><br><span class="line">350</span><br><span class="line">351</span><br><span class="line">352</span><br><span class="line">353</span><br><span class="line">354</span><br><span class="line">355</span><br><span class="line">356</span><br><span class="line">357</span><br><span class="line">358</span><br><span class="line">359</span><br><span class="line">360</span><br><span class="line">361</span><br></pre></td><td class="code"><pre><span class="line"><span class="type">static</span> <span class="type">const</span> <span class="class"><span class="keyword">struct</span> &#123;</span></span><br><span class="line">    <span class="type">void</span> (*func)(<span class="type">const</span> <span class="type">u8_t</span> *data);</span><br><span class="line">    <span class="type">u16_t</span> len;</span><br><span class="line">&#125; prov_handlers[] = &#123;</span><br><span class="line">    &#123; prov_invite, <span class="number">1</span> &#125;,			<span class="comment">//邀请阶段</span></span><br><span class="line">    &#123; prov_capabilities, <span class="number">11</span> &#125;,	 <span class="comment">//配网能力</span></span><br><span class="line">    &#123; prov_start, <span class="number">5</span>, &#125;,			<span class="comment">//开始配网</span></span><br><span class="line">    &#123; prov_pub_key, <span class="number">64</span> &#125;,		<span class="comment">//公钥交换</span></span><br><span class="line">    &#123; prov_input_complete, <span class="number">0</span> &#125;,	 <span class="comment">//输入OOB完成</span></span><br><span class="line">    &#123; prov_confirm, <span class="number">16</span> &#125;,		<span class="comment">//配网认证</span></span><br><span class="line">    &#123; prov_random, <span class="number">16</span> &#125;,		<span class="comment">//配网随机值</span></span><br><span class="line">    &#123; prov_data, <span class="number">33</span> &#125;,			<span class="comment">//分发数据</span></span><br><span class="line">    &#123; prov_complete, <span class="number">0</span> &#125;,		<span class="comment">//分发数据完成</span></span><br><span class="line">    &#123; prov_failed, <span class="number">1</span> &#125;,			<span class="comment">//配网失败</span></span><br><span class="line">&#125;;</span><br><span class="line"></span><br><span class="line"><span class="type">static</span> <span class="type">void</span> <span class="title function_">close_link</span><span class="params">(<span class="type">u8_t</span> err, <span class="type">u8_t</span> reason)</span></span><br><span class="line">&#123;</span><br><span class="line">    PROV_D(<span class="string">&quot;, 10---&gt;0&quot;</span>);</span><br><span class="line"><span class="meta">#<span class="keyword">if</span> defined(CONFIG_BT_MESH_PB_GATT)</span></span><br><span class="line">    <span class="keyword">if</span> (link.conn) &#123;</span><br><span class="line">        bt_mesh_pb_gatt_close(link.conn);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"><span class="meta">#<span class="keyword">endif</span></span></span><br><span class="line"></span><br><span class="line"><span class="meta">#<span class="keyword">if</span> defined(CONFIG_BT_MESH_PB_ADV)</span></span><br><span class="line">    <span class="keyword">if</span> (err) &#123;</span><br><span class="line">        prov_send_fail_msg(err);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    link.rx.seg = <span class="number">0</span>;</span><br><span class="line">    bearer_ctl_send(LINK_CLOSE, &amp;reason, <span class="keyword">sizeof</span>(reason));</span><br><span class="line"><span class="meta">#<span class="keyword">endif</span></span></span><br><span class="line"></span><br><span class="line">    atomic_clear_bit(link.flags, LINK_ACTIVE);</span><br><span class="line"></span><br><span class="line">    <span class="comment">/* Disable Attention Timer if it was set */</span></span><br><span class="line">    <span class="keyword">if</span> (link.conf_inputs[<span class="number">0</span>]) &#123;</span><br><span class="line">        bt_mesh_attention(<span class="literal">NULL</span>, <span class="number">0</span>);</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="type">static</span> <span class="type">void</span> <span class="title function_">prov_retransmit</span><span class="params">(<span class="keyword">struct</span> k_work *work)</span></span><br><span class="line">&#123;</span><br><span class="line">    <span class="type">int</span> i;</span><br><span class="line"></span><br><span class="line">    BT_DBG(<span class="string">&quot;&quot;</span>);</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (!atomic_test_bit(link.flags, LINK_ACTIVE)) &#123;</span><br><span class="line">        BT_WARN(<span class="string">&quot;Link not active&quot;</span>);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (k_uptime_get() - link.tx.start &gt; TRANSACTION_TIMEOUT) &#123;</span><br><span class="line">        BT_WARN(<span class="string">&quot;Giving up transaction&quot;</span>);</span><br><span class="line">        reset_link();</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">for</span> (i = <span class="number">0</span>; i &lt; ARRAY_SIZE(link.tx.buf); i++) &#123;</span><br><span class="line">        <span class="class"><span class="keyword">struct</span> <span class="title">net_buf</span> *<span class="title">buf</span> =</span> link.tx.buf[i];</span><br><span class="line"></span><br><span class="line">        <span class="keyword">if</span> (!buf) &#123;</span><br><span class="line">            <span class="keyword">break</span>;</span><br><span class="line">        &#125;</span><br><span class="line"></span><br><span class="line">        <span class="keyword">if</span> (BT_MESH_ADV(buf)-&gt;busy) &#123;</span><br><span class="line">            <span class="keyword">continue</span>;</span><br><span class="line">        &#125;</span><br><span class="line"></span><br><span class="line">        BT_DBG(<span class="string">&quot;%u bytes: %s&quot;</span>, buf-&gt;len, bt_hex(buf-&gt;data, buf-&gt;len));</span><br><span class="line"></span><br><span class="line">        <span class="keyword">if</span> (i + <span class="number">1</span> &lt; ARRAY_SIZE(link.tx.buf) &amp;&amp; link.tx.buf[i + <span class="number">1</span>]) &#123;</span><br><span class="line">            bt_mesh_adv_send(buf, <span class="literal">NULL</span>, <span class="literal">NULL</span>);</span><br><span class="line">        &#125; <span class="keyword">else</span> &#123;</span><br><span class="line">            bt_mesh_adv_send(buf, &amp;buf_sent_cb, <span class="literal">NULL</span>);</span><br><span class="line">        &#125;</span><br><span class="line"></span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="type">static</span> <span class="type">void</span> <span class="title function_">link_open</span><span class="params">(<span class="keyword">struct</span> prov_rx *rx, <span class="keyword">struct</span> net_buf_simple *buf)</span></span><br><span class="line">&#123;</span><br><span class="line">    BT_DBG(<span class="string">&quot;len %u&quot;</span>, buf-&gt;len);</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (buf-&gt;len &lt; <span class="number">16</span>) &#123;</span><br><span class="line">        BT_ERR(<span class="string">&quot;Too short bearer open message (len %u)&quot;</span>, buf-&gt;len);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (atomic_test_bit(link.flags, LINK_ACTIVE)) &#123;</span><br><span class="line">        BT_WARN(<span class="string">&quot;Ignoring bearer open: link already active&quot;</span>);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (<span class="built_in">memcmp</span>(buf-&gt;data, prov-&gt;uuid, <span class="number">16</span>)) &#123;</span><br><span class="line">        BT_DBG(<span class="string">&quot;Bearer open message not for us&quot;</span>);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    PROV_D(<span class="string">&quot;link_id: 0x%08x, 0---&gt;1&quot;</span>, rx-&gt;link_id);</span><br><span class="line">    <span class="keyword">if</span> (prov-&gt;link_open) &#123;</span><br><span class="line">        prov-&gt;link_open(BT_MESH_PROV_ADV);</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    link.id = rx-&gt;link_id;</span><br><span class="line">    atomic_set_bit(link.flags, LINK_ACTIVE);</span><br><span class="line">    net_buf_simple_init(link.rx.buf, <span class="number">0</span>);</span><br><span class="line"></span><br><span class="line">    bearer_ctl_send(LINK_ACK, <span class="literal">NULL</span>, <span class="number">0</span>);</span><br><span class="line"></span><br><span class="line">    genie_event(GENIE_EVT_SDK_MESH_PROV_START, &amp;rx-&gt;link_id);</span><br><span class="line"></span><br><span class="line">    link.expect = PROV_INVITE;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="type">static</span> <span class="type">void</span> <span class="title function_">link_ack</span><span class="params">(<span class="keyword">struct</span> prov_rx *rx, <span class="keyword">struct</span> net_buf_simple *buf)</span></span><br><span class="line">&#123;</span><br><span class="line">    BT_DBG(<span class="string">&quot;len %u&quot;</span>, buf-&gt;len);</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="type">static</span> <span class="type">void</span> <span class="title function_">link_close</span><span class="params">(<span class="keyword">struct</span> prov_rx *rx, <span class="keyword">struct</span> net_buf_simple *buf)</span></span><br><span class="line">&#123;</span><br><span class="line">    BT_DBG(<span class="string">&quot;len %u&quot;</span>, buf-&gt;len);</span><br><span class="line">    reset_link();</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="type">static</span> <span class="type">void</span> <span class="title function_">gen_prov_ctl</span><span class="params">(<span class="keyword">struct</span> prov_rx *rx, <span class="keyword">struct</span> net_buf_simple *buf)</span></span><br><span class="line">&#123;</span><br><span class="line">    BT_DBG(<span class="string">&quot;op 0x%02x len %u&quot;</span>, BEARER_CTL(rx-&gt;gpc), buf-&gt;len);</span><br><span class="line"></span><br><span class="line">    <span class="keyword">switch</span> (BEARER_CTL(rx-&gt;gpc)) &#123;</span><br><span class="line">        <span class="keyword">case</span> LINK_OPEN:</span><br><span class="line">            link_open(rx, buf);</span><br><span class="line">            <span class="keyword">break</span>;</span><br><span class="line">        <span class="keyword">case</span> LINK_ACK:</span><br><span class="line">            <span class="keyword">if</span> (!atomic_test_bit(link.flags, LINK_ACTIVE)) &#123;</span><br><span class="line">                <span class="keyword">return</span>;</span><br><span class="line">            &#125;</span><br><span class="line"></span><br><span class="line">            link_ack(rx, buf);</span><br><span class="line">            <span class="keyword">break</span>;</span><br><span class="line">        <span class="keyword">case</span> LINK_CLOSE:</span><br><span class="line">            <span class="keyword">if</span> (!atomic_test_bit(link.flags, LINK_ACTIVE)) &#123;</span><br><span class="line">                <span class="keyword">return</span>;</span><br><span class="line">            &#125;</span><br><span class="line"></span><br><span class="line">            link_close(rx, buf);</span><br><span class="line">            <span class="keyword">break</span>;</span><br><span class="line">        <span class="keyword">default</span>:</span><br><span class="line">            BT_ERR(<span class="string">&quot;Unknown bearer opcode: 0x%02x&quot;</span>, BEARER_CTL(rx-&gt;gpc));</span><br><span class="line">            <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="type">static</span> <span class="type">void</span> <span class="title function_">prov_msg_recv</span><span class="params">(<span class="type">void</span>)</span></span><br><span class="line">&#123;</span><br><span class="line">    <span class="type">u8_t</span> type = link.rx.buf-&gt;data[<span class="number">0</span>];</span><br><span class="line"></span><br><span class="line">    BT_DBG(<span class="string">&quot;type 0x%02x len %u&quot;</span>, type, link.rx.buf-&gt;len);</span><br><span class="line">    BT_DBG(<span class="string">&quot;data %s&quot;</span>, bt_hex(link.rx.buf-&gt;data, link.rx.buf-&gt;len));</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (!bt_mesh_fcs_check(link.rx.buf, link.rx.fcs)) &#123;</span><br><span class="line">        BT_ERR(<span class="string">&quot;Incorrect FCS&quot;</span>);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    gen_prov_ack_send(link.rx.id);</span><br><span class="line">    link.rx.prev_id = link.rx.id;</span><br><span class="line">    link.rx.id = <span class="number">0</span>;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (type != PROV_FAILED &amp;&amp; type != link.expect) &#123;</span><br><span class="line">        BT_WARN(<span class="string">&quot;Unexpected msg 0x%02x != 0x%02x&quot;</span>, type, link.expect);</span><br><span class="line">        prov_send_fail_msg(PROV_ERR_UNEXP_PDU);</span><br><span class="line">        <span class="comment">/* added for NODE/PROV/BV-10-C in PTS 7.4.1*/</span></span><br><span class="line">        link.expect = PROV_FAILED;</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (type &gt;= ARRAY_SIZE(prov_handlers)) &#123;</span><br><span class="line">        BT_ERR(<span class="string">&quot;Unknown provisioning PDU type 0x%02x&quot;</span>, type);</span><br><span class="line">        close_link(PROV_ERR_NVAL_PDU, CLOSE_REASON_FAILED);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (<span class="number">1</span> + prov_handlers[type].len != link.rx.buf-&gt;len) &#123;</span><br><span class="line">        BT_ERR(<span class="string">&quot;Invalid length %u for type 0x%02x&quot;</span>,</span><br><span class="line">               link.rx.buf-&gt;len, type);</span><br><span class="line">        close_link(PROV_ERR_NVAL_FMT, CLOSE_REASON_FAILED);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    prov_handlers[type].func(&amp;link.rx.buf-&gt;data[<span class="number">1</span>]);</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="type">static</span> <span class="type">void</span> <span class="title function_">gen_prov_cont</span><span class="params">(<span class="keyword">struct</span> prov_rx *rx, <span class="keyword">struct</span> net_buf_simple *buf)</span></span><br><span class="line">&#123;</span><br><span class="line">    <span class="type">u8_t</span> seg = CONT_SEG_INDEX(rx-&gt;gpc);</span><br><span class="line"></span><br><span class="line">    BT_DBG(<span class="string">&quot;len %u, seg_index %u&quot;</span>, buf-&gt;len, seg);</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (!link.rx.seg &amp;&amp; link.rx.prev_id == rx-&gt;xact_id) &#123;</span><br><span class="line">        BT_WARN(<span class="string">&quot;Resending ack&quot;</span>);</span><br><span class="line">        gen_prov_ack_send(rx-&gt;xact_id);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (rx-&gt;xact_id != link.rx.id) &#123;</span><br><span class="line">        BT_WARN(<span class="string">&quot;Data for unknown transaction (%u != %u)&quot;</span>,</span><br><span class="line">                rx-&gt;xact_id, link.rx.id);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (seg &gt; link.rx.last_seg) &#123;</span><br><span class="line">        BT_ERR(<span class="string">&quot;Invalid segment index %u&quot;</span>, seg);</span><br><span class="line">        close_link(PROV_ERR_NVAL_FMT, CLOSE_REASON_FAILED);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125; <span class="keyword">else</span> <span class="keyword">if</span> (seg == link.rx.last_seg) &#123;</span><br><span class="line">        <span class="type">u8_t</span> expect_len;</span><br><span class="line"></span><br><span class="line">        expect_len = (link.rx.buf-&gt;len - <span class="number">20</span> -</span><br><span class="line">                      (<span class="number">23</span> * (link.rx.last_seg - <span class="number">1</span>)));</span><br><span class="line">        <span class="keyword">if</span> (expect_len != buf-&gt;len) &#123;</span><br><span class="line">            BT_ERR(<span class="string">&quot;Incorrect last seg len: %u != %u&quot;</span>,</span><br><span class="line">                   expect_len, buf-&gt;len);</span><br><span class="line">            close_link(PROV_ERR_NVAL_FMT, CLOSE_REASON_FAILED);</span><br><span class="line">            <span class="keyword">return</span>;</span><br><span class="line">        &#125;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (!(link.rx.seg &amp; MESH_BIT(seg))) &#123;</span><br><span class="line">        BT_WARN(<span class="string">&quot;Ignoring already received segment&quot;</span>);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="built_in">memcpy</span>(XACT_SEG_DATA(seg), buf-&gt;data, buf-&gt;len);</span><br><span class="line">    XACT_SEG_RECV(seg);</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (!link.rx.seg) &#123;</span><br><span class="line">        prov_msg_recv();</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="type">static</span> <span class="type">void</span> <span class="title function_">gen_prov_ack</span><span class="params">(<span class="keyword">struct</span> prov_rx *rx, <span class="keyword">struct</span> net_buf_simple *buf)</span></span><br><span class="line">&#123;</span><br><span class="line">    BT_DBG(<span class="string">&quot;len %u&quot;</span>, buf-&gt;len);</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (!link.tx.buf[<span class="number">0</span>]) &#123;</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (rx-&gt;xact_id == link.tx.id) &#123;</span><br><span class="line">        prov_clear_tx();</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="type">static</span> <span class="type">void</span> <span class="title function_">gen_prov_start</span><span class="params">(<span class="keyword">struct</span> prov_rx *rx, <span class="keyword">struct</span> net_buf_simple *buf)</span></span><br><span class="line">&#123;</span><br><span class="line">    <span class="keyword">if</span> (link.rx.seg) &#123;</span><br><span class="line">        BT_WARN(<span class="string">&quot;Got Start while there are unreceived segments&quot;</span>);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (link.rx.prev_id == rx-&gt;xact_id) &#123;</span><br><span class="line">        BT_WARN(<span class="string">&quot;Resending ack&quot;</span>);</span><br><span class="line">        gen_prov_ack_send(rx-&gt;xact_id);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    link.rx.buf-&gt;len = net_buf_simple_pull_be16(buf);</span><br><span class="line">    link.rx.id  = rx-&gt;xact_id;</span><br><span class="line">    link.rx.fcs = net_buf_simple_pull_u8(buf);</span><br><span class="line"></span><br><span class="line">    BT_DBG(<span class="string">&quot;len %u last_seg %u total_len %u fcs 0x%02x&quot;</span>, buf-&gt;len,</span><br><span class="line">           START_LAST_SEG(rx-&gt;gpc), link.rx.buf-&gt;len, link.rx.fcs);</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (link.rx.buf-&gt;len &lt; <span class="number">1</span>) &#123;</span><br><span class="line">        BT_ERR(<span class="string">&quot;Ignoring zero-length provisioning PDU&quot;</span>);</span><br><span class="line">        close_link(PROV_ERR_NVAL_FMT, CLOSE_REASON_FAILED);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (link.rx.buf-&gt;len &gt; link.rx.buf-&gt;size) &#123;</span><br><span class="line">        BT_ERR(<span class="string">&quot;Too large provisioning PDU (%u bytes)&quot;</span>,</span><br><span class="line">               link.rx.buf-&gt;len);</span><br><span class="line">        close_link(PROV_ERR_NVAL_FMT, CLOSE_REASON_FAILED);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (START_LAST_SEG(rx-&gt;gpc) &gt; <span class="number">0</span> &amp;&amp; link.rx.buf-&gt;len &lt;= <span class="number">20</span>) &#123;</span><br><span class="line">        BT_ERR(<span class="string">&quot;Too small total length for multi-segment PDU&quot;</span>);</span><br><span class="line">        close_link(PROV_ERR_NVAL_FMT, CLOSE_REASON_FAILED);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    link.rx.seg = (<span class="number">1</span> &lt;&lt; (START_LAST_SEG(rx-&gt;gpc) + <span class="number">1</span>)) - <span class="number">1</span>;</span><br><span class="line">    link.rx.last_seg = START_LAST_SEG(rx-&gt;gpc);</span><br><span class="line">    <span class="built_in">memcpy</span>(link.rx.buf-&gt;data, buf-&gt;data, buf-&gt;len);</span><br><span class="line">    XACT_SEG_RECV(<span class="number">0</span>);</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (!link.rx.seg) &#123;</span><br><span class="line">        prov_msg_recv();</span><br><span class="line">    &#125;</span><br><span class="line">&#125;</span><br><span class="line"></span><br><span class="line"><span class="type">static</span> <span class="type">const</span> <span class="class"><span class="keyword">struct</span> &#123;</span></span><br><span class="line">    <span class="type">void</span> (*<span class="type">const</span> func)(<span class="keyword">struct</span> prov_rx *rx, <span class="keyword">struct</span> net_buf_simple *buf);</span><br><span class="line">    <span class="type">const</span> <span class="type">u8_t</span> require_link;</span><br><span class="line">    <span class="type">const</span> <span class="type">u8_t</span> min_len;</span><br><span class="line">&#125; gen_prov[] = &#123;</span><br><span class="line">    &#123; gen_prov_start, <span class="literal">true</span>, <span class="number">3</span> &#125;,		<span class="comment">//开始</span></span><br><span class="line">    &#123; gen_prov_ack, <span class="literal">true</span>, <span class="number">0</span> &#125;,			<span class="comment">//应答</span></span><br><span class="line">    &#123; gen_prov_cont, <span class="literal">true</span>, <span class="number">0</span> &#125;,			<span class="comment">//分包</span></span><br><span class="line">    &#123; gen_prov_ctl, <span class="literal">false</span>, <span class="number">0</span> &#125;,			<span class="comment">//配网承载控制</span></span><br><span class="line">&#125;;</span><br><span class="line"></span><br><span class="line"><span class="type">static</span> <span class="type">void</span> <span class="title function_">gen_prov_recv</span><span class="params">(<span class="keyword">struct</span> prov_rx *rx, <span class="keyword">struct</span> net_buf_simple *buf)</span></span><br><span class="line">&#123;</span><br><span class="line">    <span class="keyword">if</span> (buf-&gt;len &lt; gen_prov[GPCF(rx-&gt;gpc)].min_len) &#123;</span><br><span class="line">        BT_ERR(<span class="string">&quot;Too short GPC message type %u&quot;</span>, GPCF(rx-&gt;gpc));</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (!atomic_test_bit(link.flags, LINK_ACTIVE) &amp;&amp;</span><br><span class="line">        gen_prov[GPCF(rx-&gt;gpc)].require_link) &#123;</span><br><span class="line">        BT_DBG(<span class="string">&quot;Ignoring message that requires active link&quot;</span>);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    gen_prov[GPCF(rx-&gt;gpc)].func(rx, buf);</span><br><span class="line">&#125;</span><br><span class="line"><span class="comment">//接收到PB-ADV广播包进入</span></span><br><span class="line"><span class="type">void</span> <span class="title function_">bt_mesh_pb_adv_recv</span><span class="params">(<span class="keyword">struct</span> net_buf_simple *buf)</span></span><br><span class="line">&#123;</span><br><span class="line">    <span class="class"><span class="keyword">struct</span> <span class="title">prov_rx</span> <span class="title">rx</span>;</span></span><br><span class="line">	<span class="comment">//确定是否已连接</span></span><br><span class="line">    <span class="keyword">if</span> (!bt_prov_active() &amp;&amp; bt_mesh_is_provisioned()) &#123;</span><br><span class="line">        BT_DBG(<span class="string">&quot;Ignoring provisioning PDU - already provisioned&quot;</span>);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (buf-&gt;len &lt; <span class="number">6</span>) &#123;</span><br><span class="line">        BT_WARN(<span class="string">&quot;Too short provisioning packet (len %u)&quot;</span>, buf-&gt;len);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    rx.link_id = net_buf_simple_pull_be32(buf);</span><br><span class="line">    rx.xact_id = net_buf_simple_pull_u8(buf);</span><br><span class="line">    rx.gpc = net_buf_simple_pull_u8(buf);</span><br><span class="line"></span><br><span class="line">    BT_DBG(<span class="string">&quot;link_id 0x%08x xact_id %u&quot;</span>, rx.link_id, rx.xact_id);</span><br><span class="line"></span><br><span class="line">    <span class="keyword">if</span> (atomic_test_bit(link.flags, LINK_ACTIVE) &amp;&amp; link.id != rx.link_id) &#123;</span><br><span class="line">        BT_DBG(<span class="string">&quot;Ignoring mesh beacon for unknown link&quot;</span>);</span><br><span class="line">        <span class="keyword">return</span>;</span><br><span class="line">    &#125;</span><br><span class="line"></span><br><span class="line">    gen_prov_recv(&amp;rx, buf);</span><br><span class="line">&#125;</span><br><span class="line"></span><br></pre></td></tr></table></figure>


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